[REGRESSION] Incorrect libcurses detection in 5.2.15 (on HP-UX)

[Osipov, Michael (IN IT IN)]

Folks,

while trying to configure and compile 5.2.15 on HP-UX it does not 
properly detect libcuses and fails to detect installed libreadline.
The regression is identical to the one I reported with readline: 
https://lists.gnu.org/archive/html/bug-readline/2023-08/msg00009.html

Here is a simple patch which works for me:
> diff -ur configure configure
> --- configure   2023-08-17 21:17:53 +0200
> +++ configure   2023-08-17 21:23:41 +0200
> @@ -5960,8 +5960,7 @@
>  TERMCAP_LIB=
>  TERMCAP_DEP=
>  else
> -# we assume ncurses is installed somewhere the linker can find it
> -TERMCAP_LIB=-lncurses
> +TERMCAP_LIB=-lcurses
>  TERMCAP_DEP=
>  fi
>  
> @@ -21584,8 +21583,7 @@
>  TERMCAP_LIB=
>  TERMCAP_DEP=
>  else
> -# we assume ncurses is installed somewhere the linker can find it
> -TERMCAP_LIB=-lncurses
> +TERMCAP_LIB=-lcurses
>  TERMCAP_DEP=
>  fi

So the source in aclocal.m4 needs to be fixed.

Result:
> # ldd /opt/ports/bin/bash
>
> /opt/ports/bin/bash:
>         libreadline.so.8 =>     /opt/ports/lib/hpux32/libreadline.so.8
>         libhistory.so.8 =>      /opt/ports/lib/hpux32/libhistory.so.8
>         libxcurses.so.1 =>      /usr/lib/hpux32/libxcurses.so.1
>         libintl.so.11 =>        /opt/ports/lib/hpux32/libintl.so.11
>         libiconv.so.8 =>        /opt/ports/lib/hpux32/libiconv.so.8
>         libdl.so.1 =>   /usr/lib/hpux32/libdl.so.1
>         libc.so.1 =>    /usr/lib/hpux32/libc.so.1
>         libc.so.1 =>    /usr/lib/hpux32/libc.so.1
>         libdl.so.1 =>   /usr/lib/hpux32/libdl.so.1


Note that libcurses links to libxcurses.

Michael